https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114005
Bug ID: 114005
Summary: Constructing a constexpr std::initializer_list ICEs
GCC when using C++ modules
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eddiejnolan at gmail dot com
Target Milestone: ---
Constructing a constexpr std::initializer_list at namespace scope causes an ICE
when attempting to compile this module:
module;
#include <initializer_list>
export module module1;
constexpr std::initializer_list<int> foo{0};
Using the command line:
g++ -g -std=gnu++23 -MD -fmodules-ts -MD -fdeps-format=p1689r5 -x c++ -c
Compiler explorer link: https://godbolt.org/z/6Te44T6oo
Error message:
module1.cpp:5:8: internal compiler error: in tree_node, at cp/module.cc:9320
5 | export module math;
| ^~~~~~
0x7adc91 trees_out::tree_node(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9320
0xb9dfb2 trees_out::core_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:6066
0xba16f3 trees_out::tree_node_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:7241
0xba16f3 trees_out::tree_value(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9142
0xb9d430 trees_out::tree_node(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9340
0xb9dfb2 trees_out::core_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:6066
0xba16f3 trees_out::tree_node_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:7241
0xba16f3 trees_out::tree_value(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9142
0xb9d430 trees_out::tree_node(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9340
0xb9e0e6 trees_out::core_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:6473
0xba16f3 trees_out::tree_node_vals(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:7241
0xba16f3 trees_out::tree_value(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9142
0xb9d430 trees_out::tree_node(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:9340
0xba1a19 trees_out::write_var_def(tree_node*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:11768
0xba3bda depset::hash::find_dependencies(module_state*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:13427
0xba45e7 module_state::write_begin(elf_out*, cpp_reader*, module_state_config&,
unsigned int&)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:18000
0xba5b84 finish_module_processing(cpp_reader*)
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/module.cc:20348
0xb2e0b3 c_parse_final_cleanups()
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/cp/decl2.cc:5316
0xd88fcf c_common_parse_file()
/tmp/eddie/spack-stage/spack-stage-gcc-master-5txldehejuy5mxnvbocqkauwzyskb5oe/spack-src/gcc/c-family/c-opts.cc:1329
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
GCC version tested was built from master on 20240218 using Spack:
gcc version 14.0.1 20240218 (experimental) (Spack GCC)
